Home Comparison AMD Ryzen 7 7840HS vs AMD Ryzen 9 7945HX3D

AMD Ryzen 7 7840HS vs AMD Ryzen 9 7945HX3D

We compared two laptop CPUs: AMD Ryzen 7 7840HS with 8 cores 3.8GHz and AMD Ryzen 9 7945HX3D with 16 cores 2.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD Ryzen 7 7840HS 's Advantages
Better graphics card performance
Higher specification of memory (7500 vs 5200)
Larger memory bandwidth (89.6GB/s vs 83.2GB/s)
Higher base frequency (3.8GHz vs 2.3GHz)
More modern manufacturing process (4nm vs 5nm)
Lower TDP (54W vs 55W)
AMD Ryzen 9 7945HX3D 's Advantages
Newer PCIe version (5 vs 4.0)
Larger L3 cache size (128MB vs 16MB)

Score

Benchmark

Cinebench R23 Single Core
AMD Ryzen 7 7840HS
1768
AMD Ryzen 9 7945HX3D +9%
1940
Cinebench R23 Multi Core
AMD Ryzen 7 7840HS
16477
AMD Ryzen 9 7945HX3D +102%
33329
Geekbench 6 Single Core
AMD Ryzen 7 7840HS
2575
AMD Ryzen 9 7945HX3D +8%
2783
Geekbench 6 Multi Core
AMD Ryzen 7 7840HS
12085
AMD Ryzen 9 7945HX3D +33%
16080
Blender
AMD Ryzen 7 7840HS
267
AMD Ryzen 9 7945HX3D +77%
475
Geekbench 5 Single Core
AMD Ryzen 7 7840HS
1915
AMD Ryzen 9 7945HX3D +11%
2138
Geekbench 5 Multi Core
AMD Ryzen 7 7840HS
11238
AMD Ryzen 9 7945HX3D +70%
19153
VS

General Parameters

Apr 2023
Release Date
Jul 2023
Amd
Manufacturer
AMD
Laptop
Type
Laptop
x86-64
Instruction Set
-
Zen 4 (Phoenix)
Core Architecture
Dragon Range
FP8
Socket
AMD Socket FL1
Radeon 780M
Integrated Graphics
Radeon 610M
-
Generation
Ryzen 9 (Zen 4 (Dragon Range))

Package

25 billions
Transistor Count
17.84 billions
4 nm
Manufacturing Process
5 nm
35-54 W
Power Consumption
55 W
100 °C
Peak Operating Temperature
89 °C
-
Foundry
TSMC
-
Die Size
2x71 mm²
-
I/O Process Size
6 nm
-
I/O Die Size
122 mm²

CPU Performance

8
Performance Cores
-
16
Performance Core Threads
-
3.8 GHz
Performance Core Base Frequency
2.3 GHz
5.1 GHz
Performance Core Turbo Frequency
5.4 GHz
8
Total Core Count
16
16
Total Thread Count
32
100 MHz
Bus Frequency
100 MHz
38
Multiplier
23.0
64 K per core
L1 Cache
64 KB per core
8 MB
L2 Cache
1 MB per core
16 MB
L3 Cache
128 MB shared
No
Unlocked Multiplier
Yes
-
SMP
1

Memory Parameters

DDR5-5600, LPDDR5x-7500
Memory Types
DDR5-5200
256 GB
Max Memory Size
64 GB
2
Max Memory Channels
2
89.6 GB/s
Max Memory Bandwidth
83.2 GB/s
Yes
ECC Memory Support
Yes

Graphics Card Parameters

true
Integrated Graphics
true
800 MHz
GPU Base Frequency
-
2700 MHz
GPU Max Dynamic Frequency
2200 MHz
768
Shader Units
-
48
Texture Units
-
32
Raster Operation Units
-
12
Execution Units
2
15
Power Consumption
-
7680x4320 - 60 Hz
Max Resolution
-
4.15 TFLOPS
Graphics Performance
0.49 TFLOPS

AI Accelerator

AMD Ryzen™ AI
NPU
-
10 TOPS
Theoretical performance
-

Miscellaneous

4.0
PCIe Version
5
20
PCIe Lanes
28

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